FAQ: Can I compare the existing network configuration of a device with a configuration not in the NetBrain system, for example, the one I saved in the file system?

Yes, you can do it as below: copy the file to the NetBrain DataFolder (right click on DataFolder > goto folder and a window explorer opens pointing to the file directory for that DataFolder. Rename the file to *.config.
Then you can compare this DataFolder with another DataFolder in the NetBrain system.